With Universal Immunization Programme in India incorporating newer vaccines, the immunization schedule has been changing rapidly, varying from one state to another. The number of diseases being protected against has increased from 6 to 14 in the past few years. The immunization schedules of the states of Delhi, Himachal Pradesh, and Haryana were compared among themselves and also with the schedule recommended by the Indian Academy of Pediatrics. Variations were observed. The migrants, service providers, and those users switching between private and public sector many a time are affected due to this variation among the immunization schedules.